package com.sky.service.impl;

import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.github.xiaoymin.knife4j.core.util.CollectionUtils;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import lombok.Value;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

/**
 * @author 刘宇
 */
@Service
@Slf4j
public class OrderServiceImpl implements OrderService {
//    @Value("${sky.shop.address}")
//    private String shopAddress;
//
//    @Value("${sky.baidu.ak}")
//    private String ak;

    @Autowired
    private OrderMapper orderMapper;

    @Autowired
    private OrderDetailMapper orderDetailMapper;

    @Autowired
    private AddressBookMapper addressBookMapper;

    @Autowired
    private ShoppingCartMapper shoppingCartMapper;

    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WebSocketServer webSocketServer;

    /**
     * 用户下单
     * @param ordersSubmitDTO
     * @return
     */
    @Transactional
    @Override
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {

        //1.处理各种业务异常 购物车数据为空 地址簿为空
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if(addressBook == null){
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }
        //1.根据用户id查询购物车数据
        ShoppingCart shoppingCart =new ShoppingCart();
        Long userId = BaseContext.getCurrentId();
        shoppingCart.setUserId(userId);
        List<ShoppingCart> list =  shoppingCartMapper.list(shoppingCart);
        if(list==null||list.size()==0){
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }
        //2.向订单表发送插入1条数据
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO,orders);
        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(Orders.UN_PAID);//未支付
        orders.setStatus(Orders.PENDING_PAYMENT);//待付款
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setUserId(userId);
        orders.setPhone(addressBook.getPhone());
        orders.setConsignee(addressBook.getConsignee());//收货人
        orderMapper.insert(orders);//返回主键值订单id给订单细节表
        //3.向订单细节表插入n条数据
        List<OrderDetail> orderDetailList = new ArrayList<>();
        for (ShoppingCart cart : list) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart,orderDetail);
            orderDetail.setOrderId(orders.getId());
            orderDetailList.add(orderDetail);
        }
        orderDetailMapper.insertBatch(orderDetailList);
        //4.清空当前用户的购物车数据
        shoppingCartMapper.deleteById(userId);
        //5.封装VO返回结果
        OrderSubmitVO orderSubmitVO = new OrderSubmitVO();
        orderSubmitVO.setId(orders.getId());
        orderSubmitVO.setOrderTime(orders.getOrderTime());
        orderSubmitVO.setOrderAmount(orders.getAmount());
        orderSubmitVO.setOrderNumber(orders.getNumber());
        return orderSubmitVO;
    }

    /**
     * 订单支付
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

        //调用微信支付接口，生成预支付交易单
        /*JSONObject jsonObject = weChatPayUtil.pay(
                ordersPaymentDTO.getOrderNumber(), //商户订单号
                new BigDecimal(0.01), //支付金额，单位 元
                "苍穹外卖订单", //商品描述
                user.getOpenid() //微信用户的openid
        );*/
        JSONObject jsonObject = new JSONObject();
        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        orders.setStatus(Orders.TO_BE_CONFIRMED);
        orders.setPayStatus(Orders.PAID);
        orders.setCheckoutTime(LocalDateTime.now());

        orderMapper.update(orders);

//        通过websocket向客户端浏览器推送消息type orderId content
        Map map =new HashMap<>();
        map.put("type",1);//1表示来单提醒
        map.put("orderId",ordersDB.getId());
        map.put("content","订单号"+outTradeNo);
        //将map集合转为JSON字符串
        String jsonString = JSONObject.toJSONString(map);
        webSocketServer.sendToAllClient(jsonString);
    }

    /**
     * 订单搜索
     * @param page
     * @param pageSize
     * @param status
     * @return
     */
    @Override
    public PageResult pageQuery(int page, int pageSize, Integer status) {
        //设置分页
        PageHelper.startPage(page, pageSize);
        OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
        //查询用户id
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        //订单状态 动态
        ordersPageQueryDTO.setStatus(status);
        Page<Orders> page1 = orderMapper.pageQuery(ordersPageQueryDTO);
        //用list集合来封装放回值的数据
        List<Orders> list = new ArrayList<>();
        if(page1!=null&&page1.getTotal()>0){
            //取出在Page1中的数据
            for(Orders order : page1){
                //获取订单id
                Long orderId = order.getId();
                //根据订单id获取订单详细信息
                List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(orderId);
                //将订单详细信息封装到VO返回
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(order,orderVO);
                orderVO.setOrderDetailList(orderDetails);
                list.add(orderVO);
            }
        }
        return  new PageResult(page1.getTotal(),list);
    }

    /**
     * 查看订单详细
     * @param id
     * @return
     */
    @Override
    public OrderVO details(Long id) {
        //根据订单id查询订单orders
        Orders orders = orderMapper.getById(id);
        //根据订单id查询订单详细信息
        List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(id);
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders,orderVO);
        orderVO.setOrderDetailList(orderDetails);
        return orderVO;
    }

    /**
     * 用户取消订单
     * @param id
     */
    public void userCancelById(Long id) throws Exception {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(id);

        // 校验订单是否存在
        if (ordersDB == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        if (ordersDB.getStatus() > 2) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());

        // 订单处于待接单状态下取消，需要进行退款
        if (ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            //调用微信支付退款接口
            weChatPayUtil.refund(
                    ordersDB.getNumber(), //商户订单号
                    ordersDB.getNumber(), //商户退款单号
                    new BigDecimal(0.01),//退款金额，单位 元
                    new BigDecimal(0.01));//原订单金额

            //支付状态修改为 退款
            orders.setPayStatus(Orders.REFUND);
        }

        // 更新订单状态、取消原因、取消时间
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason("用户取消");
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    /**
     * 再来一单
     * @param id
     */
    public void repetition(Long id) {
        // 查询当前用户id
        Long userId = BaseContext.getCurrentId();

        // 根据订单id查询当前订单详情
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);

        // 将订单详情对象转换为购物车对象
        List<ShoppingCart> shoppingCartList = orderDetailList.stream().map(x -> {
            ShoppingCart shoppingCart = new ShoppingCart();

            // 将原订单详情里面的菜品信息重新复制到购物车对象中
            BeanUtils.copyProperties(x, shoppingCart, "id");
            shoppingCart.setUserId(userId);
            shoppingCart.setCreateTime(LocalDateTime.now());

            return shoppingCart;
        }).collect(Collectors.toList());
        // 将购物车对象批量添加到数据库
        shoppingCartMapper.insertBatch(shoppingCartList);
    }

    /**
     * 订单搜索
     * @param ordersPageQueryDTO
     * @return
     */
    @Override
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
        //开启分页查询
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());
        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);
        // 部分订单状态，需要额外返回订单菜品信息，将Orders转化为OrderVO
//        List<OrderVO> orderVOList = getOrderVOList(page);
        return new PageResult(page.getTotal(), page.getResult());
    }

    /**
     * 各个订单状态的统计
     * @return
     */
    @Override
    public OrderStatisticsVO statistics() {
        //根据状态分别查询待接单,待派送,派送中的订单数据
        Integer toBeConfirmed= orderMapper.countStatus(Orders.TO_BE_CONFIRMED);
        Integer confirmed=orderMapper.countStatus(Orders.CONFIRMED);
        Integer deliveryInProgress=orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);
        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setConfirmed(confirmed);
        orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);
        orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
        return orderStatisticsVO;
    }

    /**
     * 接单
     * @param ordersConfirmDTO
     * @return
     */
    @Override
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders = new Orders();
        orders.setStatus(Orders.CONFIRMED);
        orders.setId(ordersConfirmDTO.getId());
        orderMapper.update(orders);
    }

    /**
     * 拒单
     * @param ordersRejectionDTO
     * @return
     */
    @Override
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) throws Exception {
        //订单处于状态2才能拒单  如果用户已付款需要退款
        //根据id查询查询订单
        Orders orders1 = orderMapper.getById(ordersRejectionDTO.getId());
        if(orders1==null||!orders1.getStatus().equals(Orders.TO_BE_CONFIRMED)){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //支付状态
        Integer payStatus = orders1.getPayStatus();
        //退款 无法实现 原因:个人没有收款权限
//        if(payStatus== Orders.PAID) {
//            //用户已支付 需退款
//            String refund = weChatPayUtil.refund(
//                    orders1.getNumber(),
//                    orders1.getNumber(),
//                    new BigDecimal(0.01),
//                    new BigDecimal(0.01));
//            log.info("申请退款:{}", refund);
//        }
        //设置退款原因 退款时间 更新状态
        Orders orders = new Orders();
        orders.setRejectionReason(ordersRejectionDTO.getRejectionReason());
        orders.setId(ordersRejectionDTO.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    /**
     * 取消订单
     * @param ordersCancelDTO
     * @return
     */
    @Override
    public void cancel(OrdersCancelDTO ordersCancelDTO) throws Exception {
        //根据id查询订单
        Orders orders = orderMapper.getById(ordersCancelDTO.getId());
        // 校验订单是否存在
        if (orders == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        if (orders.getStatus() > 2) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
//        if(payStatus==Orders.PAID){
//            //用户已支付 需退款
//            String refund = weChatPayUtil.refund(
//                    orders.getNumber(),
//                    orders.getNumber(),
//                    new BigDecimal(0.01),
//                    new BigDecimal(0.01));
//            log.info("申请退款:{}", refund);
//        }
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelTime(LocalDateTime.now());
        orders.setId(ordersCancelDTO.getId());
        orders.setRejectionReason(orders.getRejectionReason());
        orderMapper.update(orders);
    }

    /**
     * 派送订单
     * @param id
     * @return
     */
    @Override
    public void delivery(Long id) {
        //根据id查询订单判断订单是否存在 且订单状态为待派送
        Orders orders = orderMapper.getById(id);
        if(orders==null||!orders.getStatus().equals(Orders.CONFIRMED)){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //满足条件 修改状态
        Orders orders1 = new Orders();
        orders1.setStatus(Orders.DELIVERY_IN_PROGRESS);//派送中
        orders1.setId(id);
        orderMapper.update(orders1);
    }

    /**
     * 完成订单
     * @param id
     * @return
     */
    @Override
    public void complete(Long id) {
        //查看订单是否存在且状态为派送中
        Orders orders=orderMapper.getById(id);
        if(orders==null||!orders.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders1 = new Orders();
        orders1.setStatus(Orders.COMPLETED);
        orders1.setId(id);
        orderMapper.update(orders1);
    }

    /**
     * 客户催单
     * @param id
     */
    @Override
    public void reminder(Long id) {
        //查看订单是否存在
        Orders orders = orderMapper.getById(id);
        if (orders == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Map map = new HashMap();
        map.put("type", 2);//2表示客户催单
        map.put("orderId", id);
        map.put("content", "订单号" + orders.getNumber());
        String json = JSONObject.toJSONString(map);
        webSocketServer.sendToAllClient(json);
    }

   /* private List<OrderVO> getOrderVOList(Page<Orders> page) {
        // 需要返回订单菜品信息，自定义OrderVO响应结果
        List<OrderVO> orderVOList = new ArrayList<>();
        List<Orders> ordersList = page.getResult();
        if (!CollectionUtils.isEmpty(ordersList)) {
            for (Orders orders : ordersList) {
                // 将共同字段复制到OrderVO
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                String orderDishes = getOrderDishesStr(orders);
                // 将订单菜品信息封装到orderVO中，并添加到orderVOList
                orderVO.setOrderDishes(orderDishes);
                orderVOList.add(orderVO);
            }
        }
        return orderVOList;
    }

    /**
     * 根据订单id获取菜品信息字符串
     *
     * @param orders
     * @return
     */
    /*
    private String getOrderDishesStr(Orders orders) {
        // 查询订单菜品详情信息（订单中的菜品和数量）
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orders.getId());

        // 将每一条订单菜品信息拼接为字符串（格式：宫保鸡丁*3；）
        List<String> orderDishList = orderDetailList.stream().map(x -> {
            String orderDish = x.getName() + "*" + x.getNumber() + ";";
            return orderDish;
        }).collect(Collectors.toList());
        // 将该订单对应的所有菜品信息拼接在一起
        return String.join("", orderDishList);
    }*/

}
